Hi and welcome from Arizona, USA!
Many chicks you can tell their gender day one.
I look for early reddening of the comb, their stance.
Some chicks can be color sexed. (Sex link)
Some chicks can be feather sexed the first week.
I suggest you use the search function up above but better yet, get some pics of your chicks and post them on the Breed and Gender forum.
Again. Welcome so glad you are here.